Note 8 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
State	$ 23	$ 43
Foreign	283	203
Current Income Tax Expense (Benefit), Total	306	246
Federal	1,673	1,236
Foreign	(287)	(25)
Deferred Income Tax Expense (Benefit), Total	1,386	1,211
Total income tax provision	$ 1,692	$ 1,457